package com.hzy.test01;

public class Hello {
    public static int getSum(int a, int b) {
        return a + b;
    }

    public static void main(String[] args) {
        System.out.println("Hello World!");
        int sum = getSum(1, 2);
        System.out.println(sum);
        //创建长度为4的int类型数组 值是0
        int[] arr = new int[4];
        arr[0] = 12;
        arr[1] = 99;
//        System.out.println("arr = " + arr);
    }
}
